The Coyote Runner is an agile Light Infantry unit of the Aztecs in Age of Empires III: The WarChiefs, able to fulfill the role of a cavalry unit at a lesser cost, and is a unique class. The coyote runner is effective against light infantry and artillery. Due to being a melee unit, the Coyote Runner is vulnerable while closing its target.

"Humorous, playful, and unpredictable, the coyote was considered sacred to the Aztec as well as many other Native peoples, and the Aztec coyote runner strove to emulate the animal's qualities in battle. Coyote runners wore teeth and fur to symbolize the coyote's physical appearance, coupled with bright colors and feathers to illustrate its capricious nature.

The coyote runners were all left-handed because that made them more dangerous in combat."